/*
 * UserNet  --  TCP/IP implementation in userspace
 * Copyright (C) 2010  Robert Millan
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>	/* malloc */

#include "unet/client.h"
#include "unet/ipc.h"
#include "unet/misc.h"

static struct unet_client *client_list[64];
static pthread_mutex_t client_list_mutex = PTHREAD_MUTEX_INITIALIZER;

struct unet_client *
unet_client_add (int fd, pid_t pid)
{
  struct unet_client *client = unet_zalloc (sizeof (*client));
  if (! client)
    return NULL;

  client->fd = fd;
  client->pid = pid;

  debug_printf ("client", "Hi %u, pleased to meet you!\n", client->pid);

  pthread_mutex_lock (& client_list_mutex);
  client->next = HASH_HEAD (client_list, client->pid);
  HASH_HEAD (client_list, client->pid) = client;
  pthread_mutex_unlock (& client_list_mutex);

  return client;
}

void
unet_client_delete (struct unet_client *client)
{
  debug_printf ("client", "goodbye, %u.\n", client->pid);
  // FIXME: implement
}

struct unet_client *
unet_client_find (pid_t pid)
{
  struct unet_client *i;
  for (i = HASH_HEAD (client_list, pid); i; i = i->next)
    if (i->pid == pid)
      return i;

  return NULL;
}
